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Finding the Fourth Proportional to 18,707.76, 28,062.88 and 6,227.28

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Solution

The fourth proportional to 18,707.76, 28,062.88 and 6,227.28 is: 9,341.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.76 : 28,062.88 = 6,227.28 : x
  2. Step 2: Convert to fraction form
    18,707.76/28,062.88 = 6,227.28/x
  3. Step 3: Cross multiply
    18,707.76x = 28,062.88 × 6,227.28
  4. Step 4: Simplify right side
    18,707.76x = 174,755,411.37
  5. Step 5: Solve for x
    x = 174,755,411.37/18,707.76
  6. Step 6: Final answer
    x = 9,341.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.